Within 3 years:
The M-E will be Leica's "purist" camera. Priced under $5k US, it will appeal to those who are like the people who now carry the torch for film M's. There will be no loss of status associated with "entry level" products; instead, a certain panache that goes along with "I don't need all that other crap; just give me a great lens." The camera is likely to improve its specs as all things digital must. But I'll stick with the price point target.
The M9/M9P might disappear, or it will become like the "sports package upgrade" that BMW offers. More power, different suspension, and a little badge-ing that sets its owners apart from the pack.
The M-new will be, simply, the best Leica ever. Folks (like me) who "have no use for video" will get used to the idea of a premium ("the" premium) camera that has most of the features of a smart phone. 2016 will bring the "Auto-Rangefinder" in a body not much different from today's M's.